Pass/fail models helped prop firms scale because they were simple. That still works as a basic filter, but it leaves out how stable, concentrated, and repeatable a trader’s performance really was. That matters more in 2026 because prop firms have better data, more flexible challenge design, and stronger review controls. Now, brokerages can benefit from implementing a more complex, nuanced system of evaluating their prop traders using modern trader evaluation metrics. But what does that system look like? Let’s explore.